Quick reminder, a Chromecast is a small HDMI dongle that allows people to “cast” media to a display with a HDMI port.It is a nice little device that makes watching things like Netflix or Hulu on a big screen a breeze!

The Chromecast is cheap $35. But it’s nice to be able to cut that price in half. Okay, Groupon’s offer isn’t actually 50% off, but it’s close. For the next five days (or until supplies run out), you can get a Chromecast for just $20.